Claim · model-written summary
Interspecific hybridization and polyploidy may have reduced fitness of sexual progenitors.
- Taxon
- alpine apomictic plantst0
- Outcome
- fitness of sexual progenitor speciese0
- Qualifier
- Interspecific hybridization and polyploidye0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Verbatim
e0“Interspecific hybridization and polyploidy may have spurred recurrent origins of asexuality, while decreasing the fitness of sexual progenitor species.”
t0“alpine apomictic plants”
Title
Evolution and biogeography of alpine apomictic plants
Elvira Hörandl Taxon 2011. doi:10.1002/tax.602009
Other claims from this paper (6)
- Observation Asexual organisms often occupy larger and more northern areas than sexual relatives.
- Observation Asexual organisms more often colonize previously glaciated areas.
- Mechanism Apomixis aided recolonization of the Alps after glacial retreat through establishment by single individuals.
- Observation Sexual hybrids or polyploids did not show geographical parthenogenesis relative to sexual diploid progenitors.
- Mechanism The authors suggest climatic oscillations triggered range shifts and crossing barrier breakdown.
- Mechanism Interspecific hybridization and polyploidy may have promoted recurrent origins of asexuality.